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CVE-2021-39896

3.8 · LOW

In all versions of GitLab CE/EE since version 8.0, when an admin uses the impersonate feature twice and stops impersonating, the admin may be logged in as the second user they impersonated, which m…

Published Oct 4, 2021EPSS 0.62%

Overview

CVE-2021-39896 is a low-severity vulnerability. It was published on October 4, 2021 and has a CVSS 3.1 base score of 3.8 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.8, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

In all versions of GitLab CE/EE since version 8.0, when an admin uses the impersonate feature twice and stops impersonating, the admin may be logged in as the second user they impersonated, which may lead to repudiation issues.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39896.jsonRefgitlab.com/gitlab-org/gitlab/-/issues/339362Refgitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39896.jsonRefgitlab.com/gitlab-org/gitlab/-/issues/339362

How CyberStrike helps

Frequently asked questions

What is CVE-2021-39896?

CVE-2021-39896 is a low-severity vulnerability. It was published on October 4, 2021 and has a CVSS 3.1 base score of 3.8 (LOW).

How severe is CVE-2021-39896?

This vulnerability has a CVSS 3.1 base score of 3.8, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-39896?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-39896?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-39896 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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